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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 15 — Jul. 16, 2012
  • pp: 16166–16173

Growth of sparse arrays of narrow GaN nanorods hosting spectrally stable InGaN quantum disks

Yen-Ting Chen, Wen-Che Tsai, Wen-Yen Chen, Ching-Lien Hsiao, Hsu-Cheng Hsu, Wen-Hao Chang, Tzu-Min Hsu, Kuei-Hsien Chen, and Li-Chyong Chen  »View Author Affiliations

Optics Express, Vol. 20, Issue 15, pp. 16166-16173 (2012)

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Wafer-scale production of single InGaN quantum disks (QD) in-a-nanorod array with small rod diameter (> 9 nm) and low rod-density (< 108 cm−2) has been achieved without extensive processing steps. Excitation power-dependent μPL spectrum of single QD reveals multi-excitonic peak with 0.75 meV blue-shift for 3 orders of magnitude increasing power, indicating the present system is spectrally stable and nearly free of quantum-confined Stark effects, due possibly to the strain relaxation induced by free surface of small rod diameters. The fully polarized emissions, a high working temperature (180 K), low rod density and good alignment, render this system promising as a potential quantum photon source.

© 2012 OSA

OCIS Codes
(160.6000) Materials : Semiconductor materials
(160.4236) Materials : Nanomaterials
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:

Original Manuscript: March 23, 2012
Revised Manuscript: April 27, 2012
Manuscript Accepted: June 11, 2012
Published: July 2, 2012

Yen-Ting Chen, Wen-Che Tsai, Wen-Yen Chen, Ching-Lien Hsiao, Hsu-Cheng Hsu, Wen-Hao Chang, Tzu-Min Hsu, Kuei-Hsien Chen, and Li-Chyong Chen, "Growth of sparse arrays of narrow GaN nanorods hosting spectrally stable InGaN quantum disks," Opt. Express 20, 16166-16173 (2012)

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